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CORROSION PREVENTION AND SEALING CORROSION PREVENTION 77-4-7 The checks described above are intended to be visual only. It is not intended that the operator should remove trim With the vehicle on a lift, and using an inspection or spot lamp, visually check for the following: l Corrosion damage and damaged paintwork, condition of underbody sealer on front and rear lower panels, sills l Damage to underbody sealer. Corrosion in areas adjacent to suspension mountings and fuel tank fixings. NOTE: The presence of small blisters in the underbody sealer is acceptable, providing they do not expose bare metal. Pay special attention to signs of damage caused to panels or corrosion protection material by incorrect jack WARNING: It is essential to follow the correct jacking and lifting procedures. With the vehicle lowered, visually check for evidence of damage and corrosion on all visible painted areas, in l Front edge of bonnet; l Visible flanges in engine compartment; l Lower body and door panels. Rectify any bodywork damage or evidence of corrosion found during inspection as soon as is practicable, both to Where corrosion has become evident and is emanating from beneath a removable component (e.g. trim panel, Underbody protection repairs Remove corrosion protection from the damaged area before straightening or panel beating. This applies in particular WARNING: DO NOT use oxy-acetylene gas equipment to remove corrosion prevention materials. Large NOTE: Equipment for the removal of tough anti-corrosion sealers offers varying degrees of speed and effectiveness. The most common method of removal is by means of a hot air blower with integral scraper. Another tool, and one of the most efficient methods, is the rapid-cutting 'hot knife'. This tool uses a wide blade and is Use the following procedure when repairing underbody coatings: 1 Remove existing underbody coatings material 3 Re-prime the affected area CAUTION: DO NOT, under any circumstances, apply underbody sealer directly to bare metal surfaces. 4 Replace all heat-fusible plugs which have been disturbed. Where such plugs are not available use rubber grommets of equivalent size, ensuring that they are embedded in sealer 5 Mask off all mounting faces from which mechanical components, hoses and pipe clips, have been removed. Underbody sealer must be applied before such components are refitted 6 Brush sealer into all exposed seams before applying underbody wax |